Chew slowly and stutter when eating. I suggest you take an earphone to dinner (don't turn on the sound), and then you will make up your mind to get rid of it (it is quite difficult to get rid of it, after all, you are used to it). There are still many people who feel good about themselves, so there is nothing to do.
This is not a disease, but a personal habit. As long as you avoid talking while eating, chew with your mouth closed and try to chew the food before swallowing it, you won't get used to it at first, but you will gradually change it.
This way, you won't spit out food because your mouth is long and you suddenly speak. This is a very gentleman and cultured eating habit.
Tips:
When eating with your mouth, you should avoid making sounds like "delicious".
When drinking soup, you should avoid making a "snoring" sound.
Don't wolf down your food.
Turn your back when sneezing.
From the medical and health point of view, sneezing at the table will make your waste gas and saliva splash on everyone at a super high speed and blend into the air around the table. This scene is terrible and disgusting to imagine. From the point of etiquette, sneezing at the desktop is a sign of impoliteness and lack of self-control.
This will bring unpleasant smells and sounds to everyone and make everyone feel uncomfortable both physically and mentally. If you sneeze with a runny nose and tears at the same time, it is simply a blasphemy to everyone's aesthetics and an irresponsible expression of your public image. No matter what your status is, this sneeze will definitely make you lose face.